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Unformatted text preview: Phys 100 Fall 2011 Concepts of Physics: Homework 6 Due: 12 October 2011 In order to receive full credit, you must show all work, calculations and provide complete reasons and explanations for your solutions. 1 Energy and a skater without friction Running the Animation: The following exercise will require the animation Energy Skate Park provided by the PhET group. There will generally be two parts to this: 1. Running the animation 2. Loading specially designed tracks. The animation can be accessed at one of the following locations: http://phet.colorado.edu/sims/energy-skate-park/energy-skate-park.jnlp http://myhome.coloradomesa.edu/ dacollin/teaching/2011Fall/Phys100/animations/skater.jar H: \ DOWNLOAD \ dacollin \ 2011Fall \ Phys100 \ skater.jar Click on the link and, at the Java prompt, open the animation. A track should appear. A track that runs down and up should appear. A skater will move on this track. There are a number of adjustable controls in the panel on the right. Ensure that the location is Earth and that the gravity is 9 . 81 . There should be no friction. The panel at the bottom controls the speed of the animation and you can freeze it by hitting pause. Opening Track Files: The special designed tracks can only be found on the networked H drive. In each case you load these by clicking on the file menu item in the animation window and then clicking open. You will have to browse through the files (preferably starting on My Computer) to reach the directory H: \ DOWNLOAD \ dacollin \ 2011Fall...
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